Merge pull request #3365 from orestisf1993/DRAG_REVERT

[i3/i3] / src / util.c

diff --git a/src/util.c b/src/util.c
index 0289ded91f6a5a8a4a8dc1b6dbd9ae14f3de1465..dc3444f7b6aa950be8b4696896ac55b1cc4033fc 100644 (file)
--- a/src/util.c
+++ b/src/util.c
@@ -287,7 +287,7 @@ void i3_restart(bool forget_layout) {
 
     restore_geometry();
 
-    ipc_shutdown();
+    ipc_shutdown(SHUTDOWN_REASON_RESTART);
 
     LOG("restarting \"%s\"...\n", start_argv[0]);
     /* make sure -a is in the argument list or add it */
@@ -458,3 +458,52 @@ void kill_nagbar(pid_t *nagbar_pid, bool wait_for_it) {
      * waitpid() here. */
     waitpid(*nagbar_pid, NULL, 0);
 }
+
+/*
+ * Converts a string into a long using strtol().
+ * This is a convenience wrapper checking the parsing result. It returns true
+ * if the number could be parsed.
+ */
+bool parse_long(const char *str, long *out, int base) {
+    char *end;
+    long result = strtol(str, &end, base);
+    if (result == LONG_MIN || result == LONG_MAX || result < 0 || (end != NULL && *end != '\0')) {
+        *out = result;
+        return false;
+    }
+
+    *out = result;
+    return true;
+}
+
+/*
+ * Slurp reads path in its entirety into buf, returning the length of the file
+ * or -1 if the file could not be read. buf is set to a buffer of appropriate
+ * size, or NULL if -1 is returned.
+ *
+ */
+ssize_t slurp(const char *path, char **buf) {
+    FILE *f;
+    if ((f = fopen(path, "r")) == NULL) {
+        ELOG("Cannot open file \"%s\": %s\n", path, strerror(errno));
+        return -1;
+    }
+    struct stat stbuf;
+    if (fstat(fileno(f), &stbuf) != 0) {
+        ELOG("Cannot fstat() \"%s\": %s\n", path, strerror(errno));
+        fclose(f);
+        return -1;
+    }
+    /* Allocate one extra NUL byte to make the buffer usable with C string
+     * functions. yajl doesn’t need this, but this makes slurp safer. */
+    *buf = scalloc(stbuf.st_size + 1, 1);
+    size_t n = fread(*buf, 1, stbuf.st_size, f);
+    fclose(f);
+    if ((ssize_t)n != stbuf.st_size) {
+        ELOG("File \"%s\" could not be read entirely: got %zd, want %" PRIi64 "\n", path, n, (int64_t)stbuf.st_size);
+        free(*buf);
+        *buf = NULL;
+        return -1;
+    }
+    return (ssize_t)n;
+}